It is narrated from Sayyiduna Sa’d (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: “It is not permissible for any Muslim to cut off relations with his brother for more than three days.”
Hadith Referenceمسند احمد / مسند باقي العشرة المبشرين بالجنة / 1589